5251791 has 4 divisors (see below), whose sum is σ = 7002392. Its totient is φ = 3501192.

The previous prime is 5251789. The next prime is 5251819. The reversal of 5251791 is 1971525.

5251791 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5251791 - 2¹ = 5251789 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875296 + ... + 875301.

It is an arithmetic number, because the mean of its divisors is an integer number (1750598).

Almost surely, 2^5251791 is an apocalyptic number.

5251791 is a deficient number, since it is larger than the sum of its proper divisors (1750601).

5251791 is a wasteful number, since it uses less digits than its factorization.

5251791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750600.

The product of its digits is 3150, while the sum is 30.

The square root of 5251791 is about 2291.6786423930. The cubic root of 5251791 is about 173.8210936917.

The spelling of 5251791 in words is "five million, two hundred fifty-one thousand, seven hundred ninety-one".